FYI it's back in stock again at $359. Funny now the 'new' price is lower than 'used' price. This lens will definitely hold its value that's for sure. I'm comparing the 20mm 1.7 and 25mm 1.4 right now and I think the compactness of 20mm and its wider angle are enough justification to keep both if possible. DoF-wise, don't expect much blurred backgrounds with 20mm.